An underground gas pipeline break repair drainage device

Abstract

The application discloses a kind of underground gas pipeline breakage repair drainage devices, including air bag, one end outside of air bag is provided with top pipe by connecting assembly, one end of air bag is also connected with inflation pipe and monitoring gas pipe, one end of inflation pipe is connected with gas supply equipment, one end of monitoring gas pipe is installed with air pressure equipment.The application utilizes top pipe and can facilitate the air bag that is not inflated to be pushed into the inside of underground gas pipeline, then gas is discharged into the air bag along the inflation pipe by gas supply equipment, to realize the inflation of air bag, so that the air bag after expansion is tightly against the inner wall of gas pipeline, then the air bag after expansion is pulled back from the gas pipeline, using the air bag after expansion can realize the effusion in gas pipeline to be discharged uniformly, to solve the process that effusion drainage can be realized in narrow underground gas pipeline, its structure is simple and convenient, easy to deploy;And the whole section of gas pipeline does not need to be turned over from the ground to replace, to reduce waste and save the time of re-aeration.

Description

Technical Field

[0001] This application relates to the technical field of underground gas pipelines, and in particular to a device for repairing and draining damaged underground gas pipelines. Background Technology

[0002] Currently, over 90% of urban gas pipelines are laid underground, primarily using three methods: direct burial (burying the pipeline directly into the soil at a predetermined depth), trenchless laying (drilling holes underground using directional drilling rigs or pipe jacking equipment, then pulling or jacking prefabricated gas pipelines section by section into underground tunnels), and trench laying (constructing underground trenches, such as urban integrated pipe corridors, and placing the pipelines within them for easier inspection and maintenance; often used in densely populated or complex areas). Underground laying is the primary method for urban piped gas, representing the optimal choice that balances safety, space utilization, and environmental adaptability. However, accidental damage to underground gas pipelines is not uncommon due to factors such as third-party construction accidents, pipeline aging and material defects, and geological and environmental factors. Gas companies typically repair pipelines with minor damage.

[0003] However, when an underground gas pipeline is accidentally damaged, the core objective of firefighting is to control the gas leak, reduce the risk of explosion, and ensure a safe rescue environment, rather than directly extinguishing the fire (if no combustion has occurred). In this situation, the liquid sprayed by the fire department is primarily water, used to dilute and disperse the gas. Since the main components of gas are light hydrocarbons such as methane, after a leak, it mixes with air and can easily explode upon contact with an ignition source when it reaches a certain concentration. Therefore, spraying water in a mist (rather than a column) creates a water curtain or water mist, using the diffusion effect of water molecules to dilute the concentration of gas in the air, keeping it below the explosive limit (the explosive limit of methane is 5%-15%). Simultaneously, it propels the gas towards higher altitudes or safer areas, reducing the risk of accumulation. Additionally, the water mist also has a cooling and protective effect; if there is an ignition source (such as an open flame or high-temperature equipment) near the leak area, the water mist can cool the surrounding environment, preventing the high temperature from igniting the leaked gas.

[0004] Therefore, in related technologies, when repairing underground gas pipelines with minor damage after an accident, the accumulated liquid inside the pipe must be completely drained before the repair can be completed. However, due to the narrowness of underground gas pipelines and the difficulty of working underground, draining the accumulated liquid is very difficult. In cases where it is truly impossible to drain the liquid, the entire underground gas pipeline may have to be dug up from underground and replaced, resulting in waste and serious delays in restoring gas supply. Utility Model Content

[0005] The purpose of this application is to provide a device for repairing and draining damaged underground gas pipelines, in order to solve the problem that due to the narrowness of underground gas pipelines, it is difficult to operate underground, making it very difficult to drain accumulated liquid. Furthermore, for cases where it is really difficult to drain the accumulated liquid, the entire underground gas pipeline may have to be dug up from underground and replaced, resulting in waste and serious delays in the time to restore gas supply.

[0006] The technical solution for the underground gas pipeline damage repair and drainage device provided in this application is as follows: A device for repairing and draining damaged underground gas pipelines includes an airbag. A jacking pipe is installed on the outer side of one end of the airbag via a connecting component. An inflation pipe and a monitoring pipe are also connected to one end of the airbag. A gas supply device is connected to one end of the inflation pipe, and a gas pressure device is installed at one end of the monitoring pipe.

[0007] Furthermore, the connecting assembly includes a connecting seat disposed on the outer side of one end of the airbag, the connecting seat having a connecting notch, a connecting rod disposed between the inner sides of the connecting notch, and a U-shaped buckle disposed at one end of the top tube, the U-shaped buckle being sleeved on the outer side of the connecting rod.

[0008] Furthermore, a connecting threaded hole is provided on the outer side of the connecting seat, and a connecting screw is threaded into the connecting threaded hole. A connecting ring is provided at one end of the connecting screw, and a pull rope is tied to the outer side of the connecting ring.

[0009] Furthermore, multiple straps are provided on the outer side between the jacking pipe and the pull rope.

[0010] Furthermore, multiple straps are provided on the outer side between the inflation tube and the monitoring tube.

[0011] Furthermore, a protective mesh cover is also provided on the outside of the airbag.

[0012] Furthermore, it also includes two trachea collection reels, with one end of the inflation tube and the monitoring tube respectively wound around the two trachea collection reels.

[0013] Furthermore, it also includes a pipe collection reel, with one end of the pipe wound around the pipe collection reel.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: By employing a structure that integrates an airbag, a jacking pipe, an inflation pipe, a monitoring pipe, a gas supply device, and a pressure device, the system first uses the jacking pipe to easily push an uninflated airbag into the underground gas pipeline. Then, the gas supply device pumps gas along the inflation pipe into the airbag, inflating it so that the inflated airbag presses firmly against the inner wall of the underground gas pipeline. Finally, the inflated airbag is pulled back from the underground gas pipeline, allowing for the unified drainage of accumulated liquid within the pipeline. This solves the problem of draining accumulated liquid even in narrow underground gas pipelines. The structure is simple, convenient, and easy to implement; moreover, it eliminates the need to dig up and replace the entire underground gas pipeline, thus reducing waste and saving time on re-energizing the pipeline.

[0015] In addition, by using a structure that monitors the gas pipe and gas supply equipment in conjunction with the airbag during inflation, the inflation status of the airbag can be monitored in a timely manner. This allows the inflation status of the airbag to be determined, preventing it from over-inflating and pressing tightly against the inner wall of the underground gas pipeline. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the underground gas pipeline damage repair and drainage device according to an embodiment of this application.

[0017] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Airbag; 2. Pipe jacking; 3. Inflation pipe; 4. Monitoring pipe; 5. Gas supply equipment; 6. Air pressure equipment; 7. Underground gas pipeline; 8. Pipe jacking collection reel; 9. Protective net cover; 10. Connecting seat; 11. Connecting rod; 12. U-shaped buckle; 13. Connecting notch; 14. Connecting threaded hole; 15. Connecting screw; 16. Connecting ring; 17. Pull rope; 18. Strap; 19. Pipe collection reel. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0020] This application discloses a device for repairing and draining damaged underground gas pipelines, referring to... Figure 1 In this embodiment, the drainage device includes an airbag 1, a jacking pipe 2, a connecting assembly, an inflation pipe 3, a monitoring air pipe 4, an air supply device 5, and an air pressure device 6. One end of the jacking pipe 2 is fixedly connected to the outer side of one end of the airbag 1 via the connecting assembly. The jacking pipe 2 has a certain bending capacity and a certain degree of rigidity. Workers can use the jacking pipe 2 to push the uninflated airbag 1 into the underground gas pipeline 7, and also to pull the airbag 1 out of the underground gas pipeline 7.

[0021] Meanwhile, the drainage device also includes a jacking pipe collection frame 8. The end of the jacking pipe 2 furthest from the airbag 1 is wound onto the jacking pipe collection frame 8. By setting the jacking pipe collection frame 8, the jacking pipe 2 can be effectively and neatly wound and unwound. Preferably, in this embodiment, a protective net cover 9 is also provided on the outside of the airbag 1. The protective net cover 9 is used to protect the airbag 1 from being scratched when it is pulled back.

[0022] Specifically, refer to Figure 1 and Figure 2 In this embodiment, the connecting assembly includes a connecting seat 10, a connecting rod 11, and a U-shaped buckle 12. The connecting seat 10 is fixedly installed on the outer side of one end of the airbag 1; a connecting notch 13 is provided on one side of the connecting seat 10, and the two ends of the connecting rod 11 are respectively fixedly installed on the corresponding inner sides of the connecting notch 13; the U-shaped buckle 12 is fixedly installed on the end of the jacking pipe 2 away from the jacking pipe collecting frame 8, and the U-shaped buckle 12 is sleeved on the outer side of the connecting rod 11, thereby fixing the jacking pipe 2 and the airbag 1 together.

[0023] Preferably, in this embodiment, a connecting threaded hole 14 is provided on the outer side of the connecting seat 10, and a connecting screw 15 is threaded into the connecting threaded hole 14. A connecting ring 16 is installed at the end of the connecting screw 15 that extends into the connecting threaded hole 14, and a pull rope 17 is fixedly tied to the outer side of the connecting ring 16. The end of the pull rope 17 away from the connecting ring 16 extends to one side of the jacking pipe collection frame 8. In this way, the structure of the connecting screw 15, the connecting ring 16 and the pull rope 17 working together allows the operator to pull the airbag 1 out from the inside of the underground gas pipeline 7 by pulling the rope 17; and the setting of the pull rope 17 can increase the friction between the operator's hand and the pull rope 17, thereby facilitating the pulling of the airbag 1.

[0024] Meanwhile, in this embodiment, multiple straps 18 are provided on the outer side between the jacking pipe 2 and the pull rope 17. These straps 18 can bind the jacking pipe 2 and the pull rope 17 together, which can not only prevent the jacking pipe 2 and the pull rope 17 from becoming tangled, but also increase tensile strength, share friction loss, and extend service life.

[0025] Additionally, refer to Figure 1In this embodiment, one end of the inflation tube 3 and one end of the monitoring tube 4 are respectively connected to one end of the airbag 1; the air supply device 5 and the air pressure device 6 are respectively placed on one side of the top pipe collection frame 8, and the output end of the air supply device 5 is connected to the end of the inflation tube 3 away from the airbag 1 for inflating the airbag 1; while the detection end of the air pressure device 6 is connected to the end of the monitoring tube 4 away from the airbag 1 for real-time monitoring of the inflation status of the airbag 1. Specifically, the air supply device 5 is an air pump, and the air pressure device 6 is a pressure gauge. The air pump and pressure gauge are existing devices and will not be described in detail here.

[0026] Meanwhile, multiple straps 18 are also provided on the outer side between the inflation tube 3 and the monitoring tube 4. These straps 18 can bind the inflation tube 3 and the monitoring tube 4 together, thereby preventing the inflation tube 3 and the monitoring tube 4 from becoming scattered. The drainage device also includes two tube collection frames 19, which are placed on one side of the top tube collection frame 8. The ends of the inflation tube 3 and the monitoring tube 4 away from the airbag 1 are wound around the two tube collection frames 19. The tube collection frames 19 are provided to effectively and neatly wind up and unwind the inflation tube 3 or the monitoring tube 4.

[0027] Therefore, this application's solution, through the coordinated structure of an airbag 1, a jacking pipe 2, an inflation pipe 3, a monitoring gas pipe 4, a gas supply device 5, and a gas pressure device 6, firstly, the jacking pipe 2 facilitates the insertion of the uninflated airbag 1 into the underground gas pipeline 7. Then, the gas supply device 5 supplies gas along the inflation pipe 3 into the airbag 1, inflating it so that the inflated airbag 1 presses firmly against the inner wall of the underground gas pipeline 7. Finally, the pull rope 17 pulls the inflated airbag 1 back from the underground gas pipeline 7, allowing the accumulated liquid in the underground gas pipeline 7 to be discharged uniformly. This solves the problem of draining accumulated liquid even in the narrow underground gas pipeline 7. The structure is simple, convenient, and easy to implement; and it does not require digging up and replacing the entire underground gas pipeline 7 from underground, thus reducing waste and saving time on re-energizing.

[0028] In addition, while the airbag 1 is being inflated, the expansion of the airbag 1 can be monitored in a timely manner by using the structure of the monitoring air pipe 4 and the air supply equipment 5 working together. This allows the expansion of the airbag 1 to be determined, preventing the airbag 1 from over-inflating and pressing tightly against the inner wall of the underground gas pipeline 7.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for repairing and draining damaged underground gas pipelines, characterized in that: It includes an airbag (1), with a top tube (2) provided on the outer side of one end of the airbag (1) via a connecting component. One end of the airbag (1) is also connected to an inflation tube (3) and a monitoring air tube (4). One end of the inflation tube (3) is connected to an air supply device (5), and one end of the monitoring air tube (4) is equipped with an air pressure device (6).

2. The underground gas pipeline rupture repair and drainage device according to claim 1, characterized in that: The connecting assembly includes a connecting seat (10) disposed on the outer side of one end of the airbag (1), the connecting seat (10) having a connecting notch (13), a connecting rod (11) disposed between the inner sides of the connecting notch (13), and a U-shaped buckle (12) disposed at one end of the top tube (2), the U-shaped buckle (12) being sleeved on the outer side of the connecting rod (11).

3. The underground gas pipeline rupture repair and drainage device according to claim 2, characterized in that: The outer side of the connecting seat (10) is also provided with a connecting threaded hole (14), and a connecting screw (15) is internally threaded into the connecting threaded hole (14). A connecting ring (16) is provided at one end of the connecting screw (15), and a pull rope (17) is tied to the outer side of the connecting ring (16).

4. The underground gas pipeline rupture repair and drainage device according to claim 3, characterized in that: Multiple straps (18) are provided on the outer side between the jacking pipe (2) and the pull rope (17).

5. The underground gas pipeline rupture repair and drainage device according to claim 1, characterized in that: Multiple straps (18) are provided on the outer side between the inflation tube (3) and the monitoring tube (4).

6. The underground gas pipeline rupture repair and drainage device according to claim 1, characterized in that: The airbag (1) is also covered with a protective mesh cover (9).

7. The underground gas pipeline rupture repair and drainage device according to claim 1, characterized in that: It also includes two tracheal collection reels (19), with one end of the inflation tube (3) and the monitoring tube (4) respectively wound around the two tracheal collection reels (19).

8. The underground gas pipeline rupture repair and drainage device according to claim 1, characterized in that: It also includes a jacking pipe collection frame (8), on which one end of the jacking pipe (2) is wound.

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